Circuit-breaker.



G. C. BADEAU.

cmcurr BREAKER. v APPLIOATION FILED SEPT. 16,1901.

Patented 0ct13,1908. 2 SHEETS-EHEET 1.-

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\nvan Cot t 0.0.BADEAU. CIRCUIT BREAKER. APPLIOATIOH IIL ED SEPT. 16,1901.

Patented Oct. 13, 1908.

2 8HEETS-SHEET 2.

lnvenfiorz Charles C. Bad 6:) u.

I l UCL VAILABLE cor:

S PA CHARLES o. BADEAU, or soHnNnoTAnY, NEW YORK, ASSIGNOR COMPANY, A, CORPORATION or NEW roan.

*NT FFIQEQ TO GENERAL ELECTRIC CIRCUIT-BREAKER.

Specification of Letters Patent.

Patented Oct. 13, 1908.

To all whom it may concern:

Be itknown that I, CHARLES C. BADEAU, a citizen of the United States, residing at Schenectady, in the county of Schenectady and State of New York, have invented certain new and useful Improvements in Cirwit-Breakers, of which the following is a specification. '1

This invention relates to switches for controlling electric circuits, and its objectis to provide im roved means for effecting a good contact wit out undue exertion on the part of the person closin the switch. Some switches and especialy automatic circuitbreakers have movable contacts composed of laminations of copper, which yield somewhat when closed upon the stationary contacts. -When the contacts. are large, considerable force is necessary to effect a good closure,

owing to the slight resiliency of the laminatio My invention aims to furnish mechanism by means of which such a closure can be eas- ,ily accomplished.

I The invention consists in a combination of toggles whichexert their greatest power at The switch is the instant the switch closes.

' preferably provided with the usual overload coil to cause an automatic opening.

In the accompanying drawing, Figure 1 is open,

a side elevation of my improved switch Fi 2 is a side elevation of it, closed.

he terminals of theline A are connected with the stationary contact studs B, one of which is inv circuit with the'overload coil C.

.The movable main ,contact D, consisting preferably .of copper laminations, is carried on one or more radius bars E pivoted at one endto the main contact and at the other to the frame F of the switch. Said frame in eludes projecting brackets f in which is pivoted one link G of the main toggle, the other link G 'When the mam toggleis straightened out, as

.145 shown in Fig. 2, the main contact is forced being pivoted to the main contact I).

powerfullyagainst the contact studs B. In

pivoted to the lin order to effect this operation easily,

Iprovide an'auxiliary tog 1e, consisting of a link H G of the main toggle, and a link Hi pivoted to the frame and extended beyond its stationary pivot to form a handle H A sto f 'limits the' movement of the toggle H, H in straightening, permitting it to pass slightly beyond the center, so as to lock Itself asshown in Fig. 2. Themain toggle toggle connected preferably does not lock in this manner, but stops just before reaching the dead center.

and I may be varied to give greater or less purchase on the main toggle, to suit different conditions of service. It will be observed that both toggles reach their positions of greatest power at the instant the switch closes, so that by the expenditure of comparatively slight effort, a great pressure can be The overload. coil of such a breaker is shown at'C. Its pivoted armature C is connected, preferably by a rod I, with a lever K fulcrunied on the frame F adjacent to the handle H, so that when the switch is closed, the lever is close to said handle, and when the ar mature C is attracted by the coil C, the lever ..K pushes the handle far enough to trip the auxiliar toggle and allow the switch to 0 en. r .The resi ience ofthe main contact D an the weight of the main toggle G, G, is suflicient to 0 en the switch.

' a hat I claim as new and desire to secure by' Letters Patent of the United States, is,- 1. In an electric switch, the-combination with fixed and movable contacts, of inter-op- The point of connection between the links G eratingltoggles connected in tandem to multiply orce exerted on the movable contact one ofsaid to gles being overset in the closed position of the switch to lock the contacts in enga ement.

2. In an e ectric switch,'the combination with cooperating contacts, of a main toggle and an auxiliary toggle connected in tandem for actuating one of said contacts, one of said togglesbeing slightly undersct and the other slig itly overset when the contacts are in e.u-.

gagement.

3. In an electric switch, the combination 7 with coo crating contacts, of amain actuat mg togg e for one of said contacts slightly under-set. when the contacts are in on agement, and an auxiliary actuating togg e for the main toggle slightly overset when the contacts are in engagement.

I 4. In an electric switch, the combination with stationary movable contacts, of a main with said movable contact, an auxiliary toggle for operating the main toggle and slightly oversct to lock the main operating handle connected to seid auxilizu'y toggle, and an operating handle rigidly con- .l toggle, and an electro-responsive tri )ping lenected with one of the links'of said auxiliary i vice for forcing the auxiliary togg c to un toggle to increase the leverage of said handle clerset position to release both toggles.

on the main Contact. In witness whereof I have hereunto set 5. An automatic circuit-breaker comprismy hand this 11th day of September, 1901.

ing a main contact, a main toggle connected 1 thereto, an auxiliary actuating toggle for multi )lying the force of the main togglel 10 slightly overset to lock the main toggle, an l CHARLES C. BADEAU. Witnesses r ALEX. F. MACDONALD, MABEL N. EMERSON, 

